{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20728 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20728 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20728 is a medium-severity vulnerability in NTT Resonant Incorporated goo blog App, published on 9 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20728 and fix it if it is affected.\n\nWhat it is: CVE-2021-20728 is a medium-severity vulnerability in NTT Resonant Incorporated goo blog App, published on 9 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-20728 in the wild and no public exploit code.\n\nAffected product: NTT Resonant Incorporated goo blog App. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-20728/ (Markdown: https://insights.sbomify.com/CVE-2021-20728/index.md)","id":"CVE-2021-20728","markdown":"https://insights.sbomify.com/CVE-2021-20728/index.md","name":"CVE-2021-20728","record":{"aliases":["GHSA-42x9-gmxr-gcc3"],"analysis":{"component_type":"mobile_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"goo blog App","requires_auth":"none","summary":"Remote attackers can redirect users to arbitrary websites via improper access control in the goo blog mobile app.","user_interaction":"not_required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"goo_blog","vendor":"nttr"}],"cvss":{"score":5.3,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[],"description":"Improper access control vulnerability in goo blog App for Android ver.1.2.25 and earlier and for iOS ver.1.3.3 and earlier allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Open redirect in goo blog App","id":"CVE-2021-20728","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"open_redirect","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Cross-site scripting in pfSense CE and pfSense Plus","id":"CVE-2021-20729"},"packages":[],"prev":{"headline":"Cross-site scripting in Zettlr","id":"CVE-2021-20727"},"products":["goo blog App"],"published":"2021-06-09","related":[{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2022-25420","kev_date_added":null,"published":"2022-03-29"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["NTT Resonant Incorporated"]},"summary":"Remote attackers can redirect users to arbitrary websites via improper access control in the goo blog mobile app.","url":"https://insights.sbomify.com/CVE-2021-20728/"}